package com.itheima.reggie.service.impl;

import com.baomidou.mybatisplus.core.conditions.query.LambdaQueryWrapper;
import com.baomidou.mybatisplus.extension.service.impl.ServiceImpl;
import com.itheima.reggie.common.CustomException;
import com.itheima.reggie.entity.Category;
import com.itheima.reggie.entity.Dish;
import com.itheima.reggie.entity.Setmeal;
import com.itheima.reggie.entity.SetmealDish;
import com.itheima.reggie.mapper.CategoryMapper;
import com.itheima.reggie.service.CategoryService;
import com.itheima.reggie.service.DishService;
import com.itheima.reggie.service.SetmealService;
import com.itheima.reggie.service.SetmealService;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.stereotype.Service;

@Service
public class CategoryServiceImpl extends ServiceImpl<CategoryMapper, Category> implements CategoryService {
    @Autowired
    private DishService dishService;
    @Autowired
    private SetmealService setmealService;
    @Override
    public void remove(Long id) {
        LambdaQueryWrapper<Dish> dishLambdaQueryWrapper=new LambdaQueryWrapper<>();
        //添加查询条件，根据分类id进行查询
        dishLambdaQueryWrapper.eq(Dish::getCategoryId,id);
        int count = dishService.count(dishLambdaQueryWrapper);
        if (count>0){
            //关联了菜品,抛出异常
            throw new CustomException("当前分类下关联了其他菜品，不能进行删除");
        }

        LambdaQueryWrapper<Setmeal> setmealDishLambdaQueryWrapper=new LambdaQueryWrapper<>();
        //添加查询条件，根据分类id进行查询
        setmealDishLambdaQueryWrapper.eq(Setmeal::getCategoryId,id);
        int count2 = setmealService.count(setmealDishLambdaQueryWrapper);
        if (count2>0){
            //关联了套餐,抛出异常
            throw new CustomException("当前分类下关联了其他套餐，不能进行删除");
        }
        //都没有关联，正常删除
        super.removeById(id);
    }
}
